From 8563a3c03538600ae148b75debd31af16047e2d5 Mon Sep 17 00:00:00 2001
From: Matthias Andreas Benkard <code@mail.matthias.benkard.de>
Date: Wed, 16 Sep 2020 17:57:24 +0200
Subject: KB73 Add full text search to post lists.

Change-Id: Ib8333b39cef1d7035ab7fac0ff8a03b400adcb40
---
 .../resources/META-INF/resources/cms2/base.css     |  21 ++++
 src/main/resources/db/changeLog-1.6.xml            | 139 +++++++++++++++++++++
 src/main/resources/db/changeLog.xml                |   1 +
 .../resources/templates/benki/posts/postList.html  |  14 ++-
 4 files changed, 170 insertions(+), 5 deletions(-)
 create mode 100644 src/main/resources/db/changeLog-1.6.xml

(limited to 'src/main/resources')

diff --git a/src/main/resources/META-INF/resources/cms2/base.css b/src/main/resources/META-INF/resources/cms2/base.css
index 70d164c..c041364 100644
--- a/src/main/resources/META-INF/resources/cms2/base.css
+++ b/src/main/resources/META-INF/resources/cms2/base.css
@@ -353,6 +353,27 @@ elix-expandable-section.editor-pane::part(header) {
   flex-basis: content;
 }
 
+#post-search-bar {
+  flex: 1;
+
+  display: inline-flex;
+  flex-direction: row;
+  flex-wrap: nowrap;
+  min-width: 5em;
+}
+
+#post-search-query {
+  flex: 1;
+  flex-basis: content;
+  min-width: 0;
+}
+
+#post-search-bar input[type=submit] {
+  flex: 1;
+  flex-grow: 0;
+  flex-basis: content;
+}
+
 elix-expandable-section .expandable-section-title {
   margin-top: 0;
   margin-bottom: 0;
diff --git a/src/main/resources/db/changeLog-1.6.xml b/src/main/resources/db/changeLog-1.6.xml
new file mode 100644
index 0000000..d03f63b
--- /dev/null
+++ b/src/main/resources/db/changeLog-1.6.xml
@@ -0,0 +1,139 @@
+<?xml version="1.1" encoding="UTF-8" standalone="no"?>
+<databaseChangeLog
+  xmlns="http://www.liquibase.org/xml/ns/dbchangelog"
+  xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
+  xsi:schemaLocation="
+    http://www.liquibase.org/xml/ns/dbchangelog
+    http://www.liquibase.org/xml/ns/dbchangelog/dbchangelog-3.10.xsd">
+
+  <changeSet author="mulk" id="1.6-1">
+    <sql>
+      CREATE FUNCTION language_regconfig(language VARCHAR)
+      RETURNS regconfig
+      AS $$
+        SELECT CASE
+          WHEN $1 = 'de' THEN 'german'
+          WHEN $1 = 'en' THEN 'english'
+          WHEN $1 = 'fr' THEN 'french'
+          ELSE 'simple'
+        END :: regconfig
+      $$ IMMUTABLE LANGUAGE SQL;
+    </sql>
+
+    <sql>
+      CREATE INDEX bookmark_texts_search_idx ON benki.bookmark_texts
+        USING GIN (to_tsvector(language_regconfig(language), title || ' ' || description));
+    </sql>
+
+    <sql>
+      CREATE INDEX lazychat_message_texts_search_idx ON benki.lazychat_message_texts
+        USING GIN (to_tsvector(language_regconfig(language), content));
+    </sql>
+  </changeSet>
+
+  <changeSet id="1.6-2" author="mulk">
+    <createProcedure procedureName="post_matches_websearch">
+      CREATE FUNCTION post_matches_websearch(
+        post_language      TEXT,
+        post_text          TEXT,
+        websearch_language TEXT,
+        websearch_text     TEXT)
+      RETURNS BOOLEAN
+      AS $$
+        SELECT to_tsvector(language_regconfig($1), $2) @@ websearch_to_tsquery(language_regconfig($3), $4)
+      $$ LANGUAGE SQL IMMUTABLE;
+    </createProcedure>
+
+    <createProcedure procedureName="post_matches_websearch">
+      CREATE FUNCTION post_matches_websearch(
+        post_tsvector      tsvector,
+        websearch_language TEXT,
+        websearch_text     TEXT)
+      RETURNS BOOLEAN
+      AS $$
+        SELECT $1 @@ websearch_to_tsquery(language_regconfig($2), $3)
+      $$ LANGUAGE SQL IMMUTABLE;
+    </createProcedure>
+  </changeSet>
+
+  <changeSet id="1.6-3" author="mulk">
+    <addColumn tableName="bookmark_texts" schemaName="benki">
+      <column name="search_terms" type="tsvector"/>
+    </addColumn>
+    <sql>
+      CREATE INDEX bookmark_texts_search_terms_idx ON benki.bookmark_texts
+        USING GIN (search_terms);
+    </sql>
+
+    <addColumn tableName="lazychat_message_texts" schemaName="benki">
+      <column name="search_terms" type="tsvector"/>
+    </addColumn>
+    <sql>
+      CREATE INDEX lazychat_message_texts_search_terms_idx ON benki.lazychat_message_texts
+        USING GIN (search_terms);
+    </sql>
+
+    <addColumn tableName="post_texts" schemaName="benki">
+      <column name="search_terms" type="tsvector"/>
+    </addColumn>
+
+    <createProcedure procedureName="bookmark_search_term_update_trigger">
+      CREATE FUNCTION bookmark_search_term_update_trigger()
+      RETURNS trigger
+      AS $$
+      BEGIN
+        NEW.search_terms :=
+          setweight(to_tsvector(language_regconfig(NEW.language), coalesce(NEW.title, '')), 'A') ||
+          setweight(to_tsvector(language_regconfig(NEW.language), coalesce(NEW.description, '')), 'B');
+        RETURN NEW;
+      END
+      $$ LANGUAGE plpgsql;
+    </createProcedure>
+
+    <createProcedure procedureName="lazychat_message_search_term_update_trigger">
+      CREATE FUNCTION lazychat_message_search_term_update_trigger()
+      RETURNS trigger
+      AS $$
+      BEGIN
+        NEW.search_terms :=
+          to_tsvector(language_regconfig(NEW.language), coalesce(NEW.content,''));
+        RETURN NEW;
+      END
+      $$ LANGUAGE plpgsql;
+    </createProcedure>
+
+    <sql>
+      CREATE TRIGGER bookmark_search_term_update
+      BEFORE INSERT OR UPDATE
+      ON benki.bookmark_texts
+      FOR EACH ROW
+      EXECUTE FUNCTION
+        bookmark_search_term_update_trigger();
+    </sql>
+
+    <sql>
+      CREATE TRIGGER lazychat_message_search_term_update
+      BEFORE INSERT OR UPDATE
+      ON benki.lazychat_message_texts
+      FOR EACH ROW
+      EXECUTE FUNCTION
+        lazychat_message_search_term_update_trigger();
+    </sql>
+  </changeSet>
+
+  <changeSet id="1.6-4" author="mulk">
+    <sql>
+      UPDATE benki.bookmark_texts
+        SET search_terms =
+          setweight(to_tsvector(language_regconfig(language), coalesce(title, '')), 'A') ||
+          setweight(to_tsvector(language_regconfig(language), coalesce(description, '')), 'B');
+    </sql>
+
+    <sql>
+      UPDATE benki.lazychat_message_texts
+        SET search_terms =
+          to_tsvector(language_regconfig(language), coalesce(content,''));
+    </sql>
+  </changeSet>
+
+</databaseChangeLog>
diff --git a/src/main/resources/db/changeLog.xml b/src/main/resources/db/changeLog.xml
index 1c5c4ea..f1c0849 100644
--- a/src/main/resources/db/changeLog.xml
+++ b/src/main/resources/db/changeLog.xml
@@ -12,5 +12,6 @@
   <include file="db/changeLog-1.3.xml"/>
   <include file="db/changeLog-1.4.xml"/>
   <include file="db/changeLog-1.5.xml"/>
+  <include file="db/changeLog-1.6.xml"/>
 
 </databaseChangeLog>
diff --git a/src/main/resources/templates/benki/posts/postList.html b/src/main/resources/templates/benki/posts/postList.html
index deccfcd..89cea69 100644
--- a/src/main/resources/templates/benki/posts/postList.html
+++ b/src/main/resources/templates/benki/posts/postList.html
@@ -6,6 +6,7 @@
 {@java.lang.Integer previousCursor}
 {@java.lang.Integer nextCursor}
 {@java.lang.Integer pageSize}
+{@java.lang.String searchQuery}
 
 {#include base.html}
 
@@ -43,9 +44,12 @@
 {/if}
 
 <div class="paging">
-  {#if hasPreviousPage}<a href="?i={previousCursor}&n={pageSize}" class="pure-button">⇠ previous page</a>{/if}
-  <span class="filler"></span>
-  {#if hasNextPage}<a href="?i={nextCursor}&n={pageSize}" class="pure-button">next page ⇢</a>{/if}
+  <form id="post-search-bar" method="get" class="pure-form">
+    <input placeholder="Search..." value="{searchQuery}" aria-label="Search" id="post-search-query" name="search-query" type="search"/>
+    <input type="submit" aria-label="Submit search query" class="pure-button pure-button-primary" value="&#x1f50e;"/>
+  </form>
+  {#if hasPreviousPage}<a href="?i={previousCursor}&n={pageSize}&search-query={searchQuery}" class="pure-button">⇠ previous page</a>{/if}
+  {#if hasNextPage}<a href="?i={nextCursor}&n={pageSize}&search-query={searchQuery}" class="pure-button">next page ⇢</a>{/if}
 </div>
 
 <section id="main-content">
@@ -127,9 +131,9 @@
 </section>
 
 <div class="paging">
-  {#if hasPreviousPage}<a href="?i={previousCursor}&n={pageSize}" class="pure-button">⇠ previous page</a>{/if}
+  {#if hasPreviousPage}<a href="?i={previousCursor}&n={pageSize}&search-query={searchQuery}" class="pure-button">⇠ previous page</a>{/if}
   <span class="filler"></span>
-  {#if hasNextPage}<a href="?i={nextCursor}&n={pageSize}" class="pure-button">next page ⇢</a>{/if}
+  {#if hasNextPage}<a href="?i={nextCursor}&n={pageSize}&search-query={searchQuery}" class="pure-button">next page ⇢</a>{/if}
 </div>
 
 {/body}
-- 
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